CVE-2026-98247 (GCVE-0-2026-98247)
Vulnerability from cvelistv5
Published
2026-10-06 08:45
Modified
2026-10-19 09:16
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_codec: validate vendor codec count length The Read Local Supported Codecs parsers consume the variable-sized standard codec array before parsing the vendor codec count. Although the initial reply-size check includes a vendor count byte in the fixed layout, it does not guarantee that the byte remains after the standard codec array. If a controller reply ends immediately after that array, calculating the vendor codec array size reads vnd_codecs->num beyond the skb data. Use skb_pull_data() to validate and consume each codec header before using its count in both command variants.
References
Impacted products
Vendor Product Version
Linux Linux Version: 8961987f3f5fa2f2618e72304d013c8dd5e604a6
Version: 8961987f3f5fa2f2618e72304d013c8dd5e604a6
Version: 8961987f3f5fa2f2618e72304d013c8dd5e604a6
Version: 8961987f3f5fa2f2618e72304d013c8dd5e604a6
Version: 8961987f3f5fa2f2618e72304d013c8dd5e604a6
Version: 8961987f3f5fa2f2618e72304d013c8dd5e604a6
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_codec: validate vendor codec count length\n\nThe Read Local Supported Codecs parsers consume the variable-sized\nstandard codec array before parsing the vendor codec count.  Although the\ninitial reply-size check includes a vendor count byte in the fixed layout,\nit does not guarantee that the byte remains after the standard codec array.\n\nIf a controller reply ends immediately after that array, calculating the\nvendor codec array size reads vnd_codecs-\u003enum beyond the skb data.  Use\nskb_pull_data() to validate and consume each codec header before using its\ncount in both command variants."
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        "dateUpdated": "2026-10-19T09:16:18.761Z",
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          "url": "https://git.kernel.org/stable/c/a6da782fefae611e68a1aa79644065fc8ca5abcd"
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    "datePublished": "2026-10-06T08:45:16.048Z",
    "dateReserved": "2026-09-25T10:25:14.330Z",
    "dateUpdated": "2026-10-19T09:16:18.761Z",
    "state": "PUBLISHED"
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}


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